/**
 * Copyright (C)
 * 	2008 Jeremy Thomerson <jeremy@thomersonfamily.com>
 * 	2012 Michael Mosmann <michael@mosmann.de>
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wicketstuff.pageserializer.common.analyze.report.io;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import org.wicketstuff.pageserializer.common.analyze.ISerializedObjectTree;


public class TimeStampKeyGenerator implements IReportKeyGenerator {

	protected static final String DEFAULT_WITH_MILLISECONDS = "yyyy-MM-dd--hhmmss-SSS";
	private final String _pattern;
	
	public TimeStampKeyGenerator(String pattern) {
		_pattern = pattern;
	}

	@Override
	public String keyOf(ISerializedObjectTree tree) {
		return format(_pattern, new Date());
	}
	
	protected static String format(String pattern, Date currentTime) {
		return new SimpleDateFormat(pattern,Locale.GERMAN).format(currentTime);
	}

	public static IReportKeyGenerator withMilliseconds() {
		return new TimeStampKeyGenerator(DEFAULT_WITH_MILLISECONDS);
	}
}
